Novell Netware: Execute Arbitrary Code/Commands -- Existing Account

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2011.0312
    Novell Netware NWFTPD.NLM DELE Remote Code Execution Vulnerability
                               21 March 2011

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        AusCERT Security Bulletin Summary
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Product:           Novell Netware
Publisher:         Zero Day Initiative
Operating System:  Netware
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2010-4228  

Original Bulletin: 
   http://www.zerodayinitiative.com/advisories/ZDI-11-106/

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Novell Netware NWFTPD.NLM DELE Remote Code Execution Vulnerability
ZDI-11-106: March 18th, 2011

CVE ID

      CVE-2010-4228 

CVSS Score

      9, (AV:N/AC:L/Au:S/C:C/I:C/A:C) 

Affected Vendors

      Novell

Affected Products

      Netware

TippingPoint IPS Customer Protection
TippingPoint IPS customers are protected against this vulnerability by Digital 
Vaccine protection filter ID 10659. For further product information on the 
TippingPoint IPS:

      http://www.tippingpoint.com 

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on 
vulnerable installations of Novell Netware. Authentication is required to 
exploit this vulnerability.

The flaw exists within NWFTPD.NLM. When handling the argument provided to the 
DELE command the application copies user supplied data to a fixed length stack 
buffer. A remote attacker can exploit this vulnerability to execute arbitrary 
code under the context of the super user.

Vendor Response

Novell has issued an update to correct this vulnerability. More details can be 
found at:

      http://download.novell.com/Download?buildid=Ax6AbxwGLTs~

Disclosure Timeline

      2010-09-22 - Vulnerability reported to vendor
      2011-03-18 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:

      Francis Provencher for Protek Research Lab's

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